[Freedreno] Clone/ extended display

[Rob Clark]

On Tue, Sep 16, 2014 at 12:53 PM, vinay simha
<vinaysimha at inforcecomputing.com> wrote:
> Hi rob,
>
> I tried the xrandr , it worked.  Lvds being primary, HDMI extended.
>
> In kernel, DMA_p and DMA_e is having the same frame buffer, the final
> display suppose to be mirror display, but how the display is extended with
> independent resolutions 1080p and 1366x768
>
> For mirror display both resolution should be same, since lvds resolution is
> not a standard wrt TV/HDMI resolution, this cannot be achieved until
> 1366x768 fb is scaled to 1080p of TV as they do in android.
> Is this achievable wrt DRM architecture?

what should, I think, happen is that it will pick the closest matching
resolution on the HDMI monitor (1366x768 or 1368x768 is not too
uncommon).. beyond that, we'd need scaling support for mdp4 which is
not implemented yet in drm/msm.

BR,
-R

>
> regards,
> vinay simha bn
>
>
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